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  1. Dictionary
    noise
    /nɔɪz/

    noun

    • 1. a sound, especially one that is loud or unpleasant or that causes disturbance: "making a noise like a pig"
    • 2. irregular fluctuations that accompany a transmitted electrical signal but are not part of it and tend to obscure it: technical "the enhancer can improve the video signal quality, reducing noise and increasing image sharpness"

    verb

    • 1. talk about or make known publicly: "you've discovered something that should not be noised about"
    • 2. make a lot of noise: "rook, crow and jackdaw—noising loud"

    More definitions, origin and scrabble points

  2. Learn the meaning of noise as a sound or signal that is unwanted, unpleasant, or loud, or as unexplained or unexpected information. See how to use noise in different contexts and collocations with examples from the Cambridge Dictionary.

  3. Learn the various meanings and uses of the word noise, from sound to disturbance to rumor. See synonyms, examples, etymology, and related phrases of noise.

  4. Learn the meaning of noise as a sound or signal that is unwanted, unpleasant, or loud, or as unnecessary information or activity. Find out how to use noise in different contexts and with other words.

    • How Loud Is Too Loud?
    • How Many People Are Affected?
    • Who Is Most Affected?
    • Children, Noise and Health
    • GeneratedCaptionsTabForHeroSec

    The WHO guidelines for community noise recommend less than 30 A-weighted decibels (dB(A)) in bedrooms during the night for a sleep of good quality and less than 35 dB(A) in classrooms to allow good teaching and learning conditions. The WHO guidelines for night noise recommend less than 40 dB(A) of annual average (Lnight) outside of bedrooms to prev...

    According to a European Union (EU) publication: 1. about 40% of the population in EU countries is exposed to road traffic noise at levels exceeding 55 db(A); 2. 20% is exposed to levels exceeding 65 dB(A) during the daytime; and 3. more than 30% is exposed to levels exceeding 55 dB(A) at night. Only limited international figures are available on th...

    Some groups are more vulnerable to noise. As children spend more time in bed than adults, they are more exposed to night noise. Chronically ill and elderly people are more sensitive to disturbance. Shift workers are at increased risk because their sleep structure is under stress. In addition, the less affluent who cannot afford to live in quiet res...

    Impairment of early childhood development and education caused by noise may have lifelong effects on academic achievement and health. Studies and statistics on the effects of chronic exposure to aircraft noise on children have found: 1. consistent evidence that noise exposure harms cognitive performance; 2. consistent association with impaired well...

    Noise is an underestimated threat that can cause sleep disturbance, cardiovascular effects, hearing impairment and more. Learn about the WHO guidelines for community and night noise, and how noise affects children, elderly and shift workers.

  5. Both refer to something which you can hear, but when a sound is unwanted or unpleasant, we call it a noise: … 习语 make (all) the right, correct, etc. noises

  6. Learn the meaning, pronunciation and usage of the word noise, a sound that can be loud, unpleasant or frightening. Find out the difference between noise and sound, and see idioms and collocations with noise.

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